For the best bang for the buck FS' Asia or Middle East properties may be the best choices.
You might consider Four Seasons Bali and Sayan (Ocean & River Package) which would cost slightly more than your $2000 for 5 nights; Four Seasons Langkawi; or a split stay between Four Seasons Tented Camp in Chiang Rai and Four Seasons Resort Chiang Mai......
Four Seasons Resort Sharm El Sheikh paired with one of the two Four Seasons in Cairo (Nile Plaza or First Residence)..........
Or even, Four Seasons Budapest and Prague
The nicest Four Seasons for me would be the Four Seasons George V in Paris -- you would get about 2 nights there.
Many Four Seasons do participate in Virtuoso so be sure to check with a Virtuoso agent for deals to help, even a little, stretch your dollar. Should you need a referral to such a Virtuoso agent, PM me and I can refer you to mine.